My Sweetie and I went to Butchart Gardens and what do you know, we both ended up taking a bunch of photos of flowers: http://www.flickr.com/photos/ericri/tags/butchartgardens/ - I really like my Sweetie's close-ups that she was able to get with the Elph in macro mode.
For all the books and flyers you read as a tourist in Victoria, the one thing that I guess all the locals know and no one thinks of to share ad-hoc is that during the summer (at least this summer), Butchart puts on a large fireworks show at the end of day every Saturday.
We discovered this chatting with our charter bus driver after we already arrived, talking about taking a later bus back to Victoria. He went through the afternoon options, and then asked if we were staying really late, for the fireworks show. Fireworks? He said the show, according to some folks from the USA, is better than most 4th of July shows.
Unfortunately, we learned this at 2pm and the show didn't start until 9pm. Butchart's a great place to hang out, but not for eight hours during a quick holiday weekend. Anyway, something to remember for next time.